Yup. Covered that with when i said NPSHR.Big Tea wrote: ↑Mon Mar 28, 2022 9:53 pmBut if the E10 was more volatile would it not be more prone to 'producing' vapor locks?PlatinumZealot wrote: ↑Mon Mar 28, 2022 5:12 pmIt wasn't E10 degrading anything. They confirmed its low suction pressure. Very likely way below NPSHR required for the pump.
He was suggesting that it was a material compatibility problem of the pump, which is extremely unlikely. It would be very shocking even for an undergrad engineering project.
Pumping E10 fuel or any other liquid you're gonna use the material compatibility charts for that plastic or resin. There are some really exhaustive material compatibipity charts you would be surprised.
The other thing is the pumps would have been tested in the liquid under different concentrations and temperatures, and even inside more aggressive fluids.
It would be extremely unlikley for this sort of part.